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Validation NIF
//Valida nif, teoria do numeros adaptado a realidade PT
public function validatedNIF($value){
if(!$value)
return false;
$a = str_split($value);
$a[8]=(int)$a[8];//humm
$validatedValue = $a[0]*9+$a[1]*8+$a[2]*7+$a[3]*6+$a[4]*5+$a[5]*4+$a[6]*3+$a[7]*2;
return (0===$a[8])? !( (bool)($validatedValue % 11) ||(bool)(($validatedValue+10)% 11) ) : !((bool)($validatedValue+$a[8])%11);
}
